Improvement in the construction of cylinders of knitting-machines



UNITED STATES PATENT OEEIoE.

CHARLES H. YOUNG, OF LAKE VILLAGE, NEW HAMPSHIRE.

IMPROVEMENT IN THE CONSTRUCTION 0F CYLINDERS 0F KNITTING-MACHINES.

Specification forming part of Letters Patent No. 107,318, datedSeptember 13, 1870.

To all whom it may concern:

Be it known that I, CHARLES H. YOUNG, of Lake Village, in the county ofBelknap and State ofx New Hampshire, have invented an Improvement in theConstruction of Knitting- Machines; and l do hereby declare that thefollowing is a full and exact description there of, reference being hadto the accompanying drawing, making part of this specilication- Figure lbeing a top view of a cylinder for circular-knitting machinesconstructed in my improved manner; Fig. 2, a side view of the same; Fig.3, a view of the under surface of the separate or removable top.

Like letters designate corresponding parts in all of the figures.

The nature of my invention consists in making the top of the cylinder orhead of a knitting-machine, above where the shanks of the needle areinserted, in a separate piece, and grooving the lower surface thereof toreceive the needle-Shanks, the said top then being screwed or otherwisesecured to the main part of the cylinder or head of the machine, for thepurposes herein specified.

Let A represent the main part or body of the cylinder. The top B, abovethe holes a a, which receive the shanks of the needles c c, is cast orformed in a separate piece, and it has grooves a a formed radially' inits under surface, as seen in Fig. 3, to receive the shanks of theneedles when this top is laid on the main part of the cylinder, to whichit is secured by screws l) b. The advantages of this construction overthe usual construction of the cylinder in one piece, with radial holesdrilled through the upper part or flange thereof for the reception ofthe ncedleshanks, are marked and valuable.

First, the construction is much cheaper, since the grooves a a are cuteasily and rapidly with a saw or revolving cutter, and the peripheralgrooves of a large number of the tops can be cut at the same time, whilewith the whole cylinder all the holes have to be drilled into thecast-iron-a tedious and expensive work--and the peripheral grooves ofeach cylinder have to be cut separately. The construction, also, is muchmore accurate, since the grooves a a may be cut more uniformly and moreregularly apart than holes can be drilled.

Second, the construction is much stronger, and not liable to break atall, whereas the cylinder of the usual construction is very liable tobreak off at the needle-holes, being excessively weakened there,especially if fine needles are used.

rlhird, with this construction needles of any degree of fineness may beused for producing' the finest work, since the grooves a. a may be cutas small and close as desired, while with the usual construction it isimpracticable to use needles finer than No. 24 gage.

Fourth, this construction affords great facility for changing from onegage of work to another, finer or coarser, or for changing the style ofwork by simply changing the tops, whereas the ordinary construction canonly admit change of gage by changing the whole cylinder.

What I claim as my invention, and desire to secure by Letters Patent,is-

lhe knitting-machine cylinder or head having its top B made separate,removable, and grooved in its under surface for the reception of theshanks of the needles, substantially as and for the purposes hereinspecified.

Specification signed by me January 6, 187 0.

CHARLES H. YOUNG.

' Witnesses:

GEO. H. ROBY, JOHN F. DANIELs.

